Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 7, Issue 9, Pages 2944-2950Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ee01546k
Keywords
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Funding
- EPSRC [EP/I028641/1]
- Supergen Supersolar Hub [EP/J017361/1]
- ESPRC via the E-Futures Doctoral Training Center in Interdisciplinary Energy Research [EP/G037477/1]
- King Abdulaziz University [D-004/431]
- Engineering and Physical Sciences Research Council [1247551, EP/I028641/1] Funding Source: researchfish
- EPSRC [EP/I028641/1] Funding Source: UKRI
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We report the use of ultra-sonic spray-coating under ambient conditions as a deposition technique for the fabrication of planar heterojunction CH3NH3PbI3-xClx perovskite solar cells. We make a first optimization of processing parameter space using this deposition technique, and explore the role of the temperature of the substrate during spray-casting, the volatility of the casting solvent and the post deposition anneal on determining the efficiency of the resultant solar cells. We find that maximum device efficiency is correlated with the creation of dense films having a surface coverage above 85%. When such films are incorporated into a solar cell device, power conversion efficiencies of up to 11% are realized. These results demonstrate that spray-coating can be used in the large-area, low-cost manufacture of high efficiency solution-processed perovskite solar cells.
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